085
WWUS45 KRIW 271039
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
339 AM MST Sat Dec 27 2025

WYZ001-280000-
/O.CON.KRIW.WW.Y.0040.000000T0000Z-251228T0000Z/
Yellowstone National Park-
Including the cities of Old Faithful, Mammoth, and Lake
339 AM MST Sat Dec 27 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations between 2 and 6 inches,
  with the highest amounts in southwestern Yellowstone park. Winds
  gusting as high as 40 mph.

* WHERE...Yellowstone National Park.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Travel will be difficult in the backcountry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .

For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .

&&

$$

WYZ002-012-014-024-280000-
/O.CON.KRIW.WW.Y.0040.000000T0000Z-251228T0000Z/
Absaroka Mountains-Teton and Gros Ventre Mountains-Wind River
Mountains West-Salt River and Wyoming Ranges-
339 AM MST Sat Dec 27 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 3 to 6 inches, with
  locally higher amounts on the higher peaks of the Tetons and Wind
  River Range. Winds gusting as high as 50 mph.

* WHERE...Wind River Mountains West, Absaroka Mountains, Teton and
  Gros Ventre Mountains, and Salt River and Wyoming Ranges.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Travel could be very difficult, especially across
  mountain passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .

For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .

&&

$$

For more information from the National Weather Service, visit
https://weather.gov/riw/ .

Hattings